Merge pull request #48597 from robmry/nat-unprotected #116

Job	Run time
validate-dco / run	22s
build	2m 5s
test (dockerd, client, integration)	17m 11s
test (dockerd, cmd/buildctl, integration)	8m 19s
test (dockerd, solver, integration)	8m 3s
test (dockerd, frontend, integration)	8m 34s
test (dockerd, frontend/dockerfile, integration)	22m 21s
test (dockerd-containerd, client, integration)	18m 35s
test (dockerd-containerd, cmd/buildctl, integration)	8m 11s
test (dockerd-containerd, solver, integration)	8m 6s
test (dockerd-containerd, frontend, integration)	8m 24s
test (dockerd-containerd, frontend/dockerfile, integration)	23m 30s
	2h 13m 41s

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